Student Talk / Any non native speaker here who have taken and passed CBEST writing exam? [3]

Hi,Can you tell me,which books you used for passing the Reading and Mathematics section of Cbest?Secondly my essay writing is very poor.I think i can not write a single sentence.I am scared of English,Thanks to my English teacher who criticized me so much that i have phobia of english.English is not my first language.Please help me,how to improve my writing.Thanks